The friction sound is considered to be involved in the von Karman vortex street. The non-relativistic and relativistic Strouhal numbers are derived from von Karman's vortex street. The relativistic result follows from the relativistic addition formula for velocities. The friction tones generated by von Karman's vortex street form the fith sound in the fliquid helium II. This sound was still not experimentally observed in superfuid helium II and it means that this sound is here predicted as the crucial step in the low temperature helium II physics of the low temperature laboratories. The electron transport in graphene is supposed to be described by the hydrodynamic form of the viscous liquid allowing the existence of the vortex street. It is not excluded that the discovering of the vortex street in graphene can form one of the crucial discoveries in the graphene physics. By analogy with helium II, we propose that photon is a quantum vortex, or, the Onsager vortexon.